Perovskite type catalyzer for methyl hydride or methanol recapitalization and uses thereof

A perovskite-type catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, inorganic chemistry, etc., can solve the problem of perovskite composite oxide oxidation reforming system Hydrogen process and other issues, to achieve high catalytic activity and stability, control of reaction hot spots, easy to replace the effect

Inactive Publication Date: 2008-05-14
HANERGY TECH
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] But so far, no perovskite composite oxides have been found to be applied to hydrogen produ

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] La 0.2 Ce 0.8 CrO 3 Perovskite catalyst, the preparation method is as follows:

[0036] (1) Weigh nitrate and complexing agent according to the ratio of target composite oxide, so that La: Ce: Cr=0.2: 0.8: 1, while (La+Ce+Ct): EDTA: citric acid=1: 1: 1;

[0037] (2) EDTA and citric acid are mixed and dissolved in ammonia water, and the stoichiometric ratio of acid radical and ammonia water is 1: 1 to obtain a complex solution;

[0038] (3) adding nitrate in the complexing solution, heating and dissolving, stirring, allowing it to cool naturally to room temperature, adding ammoniacal liquor to the complexing solution after cooling, and adjusting the pH to 6;

[0039] (4) Control the temperature in a water bath to 75°C, stir, concentrate the complex solution until a gel is formed; then dry the gel at 120°C for 10 hours;

[0040] (5) The gel roasting procedure is as follows: heat up from room temperature for 1 hour to 400°C and keep for 4 hours; then heat up from 400°C ...

Embodiment 2

[0043] La 0.2 SM 0.8 CrO 3 Perovskite catalyst, the preparation method is as follows:

[0044] (1) Weigh nitrate and complexing agent according to the target composite oxide ratio, so that La: Sm: Cr=0.2: 0.8: 1, while (La+Sm+Ct): EDTA: citric acid=1: 1: 1;

[0045] (2) EDTA and citric acid are mixed and dissolved in ammonia water, and the stoichiometric ratio of acid radical and ammonia water is 1: 1 to obtain a complex solution;

[0046] (3) Add nitrate to the complexing solution, after heating and dissolving, stir to make it naturally cool to room temperature, add ammoniacal liquor to the complexing solution after cooling, and adjust the pH to be 5;

[0047] (4) Control the temperature in a water bath at 60°C, stir, and concentrate the complex solution until a gel is formed; then dry the gel at 100°C for 36 hours;

[0048] (5) The gel roasting procedure is as follows: heat up from room temperature for 1 hour to 200°C and keep for 2.5 hours; heat up from 200°C for 2 hou...

Embodiment 3

[0050] La 0.2 Ce 0.8 Zn 0.8 Cr 0.2 o 3 Honeycomb ceramic carrier integral catalyst, the preparation method is as follows:

[0051] (1) Weigh nitrate and complexing agent according to the ratio of target composite oxide, so that La: Ce: Zn: Cr=0.2: 0.8: 0.8: 0.2, while (La+Ce+Zn+Cr): EDTA: lemon Acid = 1:1:1;

[0052] (2) EDTA and citric acid are mixed and dissolved in ammonia water, and the stoichiometric ratio of acid radical and ammonia water is 1: 1 to obtain a complex solution;

[0053] (3) Add nitrate to the complexing solution, after heating and dissolving, stir to make it naturally cool to room temperature, add ammoniacal liquor to the complexing solution after cooling, and adjust the pH to be 7;

[0054] (4) Control the temperature in a water bath at 90°C, stir, and concentrate the complex solution until a gel is formed; then dry the gel at 150°C for 24 hours;

[0055] (5) The gel roasting procedure is as follows: heat up from room temperature for 1 hour to 600°...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a perovskite catalyst for methane and methanol reforming and the applications, belonging to the methane and methanol reforming catalyst field. The general formula of the catalyst combination is: A1-xA' xB1-yB' yO3; wherein, 0 is less than or equal to x is less than or equal to 1, 0 is less than or equal to y is less than or equal to 1, A or A' is La, Ce, Pr, Gd or Sm, B or B' is Cr, Zr, Zn, Ni, Co, Mn, Fe, Ru, Rh, Pt or Pd. The invention has the advantages of high activity and stability, good sulfur tolerant performance, high conversion rate and long service life, synchronously anti-seismic, small resistance and easy replacement and other excellences after being coated to the honeycomb structure. The invention adapts to providing hydrogen fuel and heat-electricity supply for fuel cell, reforming the hydrogen production of natural gas vapor in the distributed power generation technology or the hydrogen production of methanol spontaneous heating.

Description

technical field [0001] The present invention relates to a perovskite catalyst for methane or methanol reforming and its application, in particular to a perovskite catalyst for steam reforming of methane or autothermal reforming of methanol for hydrogen production and its application. Background technique [0002] Fuel cells, especially proton exchange membrane fuel cells (PEMFC) are entering the stage of quasi-commercialization. The ideal fuel is pure hydrogen, but so far, the fuel supply of fuel cells is still a bottleneck restricting its commercial application. From fossil fuels, such as methanol, natural gas, dimethyl ether, gasoline, and diesel, hydrogen supply to fuel cells after reforming is considered to be one of the most realistic ways to solve the hydrogen fuel supply of fuel cells. [0003] Natural gas reforming hydrogen production technology includes steam reforming, partial oxidation reforming and autothermal reforming, in which the steam reforming reaction has...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J23/10B01J23/26C01B3/40H01M4/90
CPCY02E60/50Y02P20/52
Inventor 肖钢侯晓峰周帅林崔冰冰
Owner HANERGY TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap